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One-way matrix converter capable of controlling energy supplement and control method thereof

A matrix converter and energy supplement technology, which is applied in the conversion equipment of intermediate conversion to DC conversion, etc., can solve the problems of energy loss, output waveform distortion, and conversion to meet the output voltage amplitude requirements, so as to achieve less energy storage and eliminate The effect of output waveform distortion and capacity reduction

Inactive Publication Date: 2010-12-22
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the existing matrix converter, the output voltage amplitude is limited by the input voltage value and can only be within the range of the envelope of the input voltage value, and the desired high voltage must be achieved through the boost link of the switch matrix converter. Voltage output value
[0004] For single-phase——single-phase variable voltage and frequency conversion, since the input voltage is very small and almost zero when the single input voltage commutates, it is impossible to meet the amplitude requirements of the output voltage through simple switch conversion, resulting in energy loss , making the output waveform seriously distorted

Method used

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  • One-way matrix converter capable of controlling energy supplement and control method thereof
  • One-way matrix converter capable of controlling energy supplement and control method thereof
  • One-way matrix converter capable of controlling energy supplement and control method thereof

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Embodiment Construction

[0027] Such as figure 2 Shown is the schematic circuit diagram of the embodiment of the present invention. Such as image 3 Shown is that the present invention establishes the simulation model of circuit with Pspice simulation software. The main loop of the simulation model and figure 2 principle Figure 1 The control part is also composed of energy control and switch matrix control. Among them, ABM1 ~ ABM 7 are programmable function modules, which respectively realize the following functions:

[0028] ABM1: Using Voltage Divider and Feedback Module

[0029] ABM2: given voltage module

[0030] ABM3: Matrix Converter Duty Cycle Calculation Module

[0031] ABM4: Matrix Converter Duty Cycle Calculation Module

[0032] ABM5: Power Switch Driver Module

[0033] ABM6: Power Switch Driver Module

[0034] ABM7: Power Switch Driver Module

[0035] And ABS is: absolute value generation module

[0036] Such as Figure 4 Shown is the control block diagram of the unidirectio...

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Abstract

The invention relates to a one-way matrix converter capable controlling energy supplement and a control method thereof. In the invention, an energy supplement policy is adopted, and an energy supplement circuit is added between the one-way matrix converter and a power supply; when a reversal point is not arrived, a part of input energy is stored in an energy storage capacitor; and when the reversal point is arrived, a control circuit releases energy stored in an energy storage inductor to compensate output energy so as to reduce the influence of distortion (a fundamental principle), thus an output waveform can meet requirements. Meanwhile, the invention reduces the capacity of elements, reduces the device volume and improves the power density of the device by utilizing the characteristic that the energy storage quantity of the energy storage device during high frequency is less.

Description

technical field [0001] The invention relates to a controllable energy replenishing unidirectional matrix converter and a control method thereof. Background technique [0002] Matrix converters play a pivotal role in the field of variable voltage and frequency conversion. The matrix converter has no intermediate DC energy storage link, which reduces the development cost. It has the characteristics of two-way flow of energy, can correct the power factor of the grid side, and has the advantages of adjustable voltage and frequency. [0003] However, in the existing matrix converter, the output voltage amplitude is limited by the input voltage value, and can only be within the range of the envelope of the input voltage value, and the boost link of the switch matrix conversion is required to achieve the desired high voltage. voltage output value. [0004] For the case of single-phase----single-phase variable voltage and frequency conversion, since the input voltage is very smal...

Claims

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Application Information

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IPC IPC(8): H02M5/44
Inventor 万衡陈庆安陈文博
Owner EAST CHINA UNIV OF SCI & TECH